| Project/Area Number |
11640238
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Astronomy
|
|---|
| Research Institution | Nagoya City University |
|---|
Principal Investigator |
SUGITANI Koji Nagoya City University, Institute of Natural Sciences, Assistant Professor, 自然科学研究教育センター, 助教授 (80192615)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
OGURA Katsuo Kokugakuin University, Department of Literature, Professor, 文学部, 教授 (30102099)
TAMURA Motohide National Astronomical Observatory Japan, Assistant Professor, 光学赤外線天文学研究系, 助教授 (00260018)
|
|---|
| Project Period (FY) |
1999 – 2000
|
| Project Status |
Completed (Fiscal Year 2000)
|
| Budget Amount *help |
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2000: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1999: ¥1,500,000 (Direct Cost: ¥1,500,000)
|
|---|
| Keywords | micro-iets / protostars / pre-main sequence stars / YSOs / star formation / H alpha emission lines stars / proto-planetary disks |
|---|
| Research Abstract |
The acceleration and collimation of high-velocity jets associated with YSOs (Young Stellar Objects) are considered to be deeply related to their circumstellar disks. In this research, through observations of near-infrared and optical observation as well as X-ray and radio, we aimed to search for target candidates for detailed studies of the jets, micro-jets and circumstellar disks with Subaru Telescope and/or other large telescopes.
We have analyzed the low-dispersion grism spectroscopy data which we obtained with the 2.2m telescope of University of Hawaii and 2.6m telescope of Byurakan Astrophysical Observatory in 1999. As a result, we identified about 10 H alpha stars in star forming regions very near to the sun and many H alpha stars toward the HII regions with bright-rimmed clouds, which are good candidates of YSOs having micro-jects and/or cicumstellar disks. We made followup observations for some of the above candidates by using HARIS (High Angular Resolution Imaging Spectrograph) of University of Hawaii. The lithium absorption line, which is a good indicator of YSO, was detected in most of them. We also obtained near-infrared data for these objects by using SIRIUS (simultaneously Infrared Imager for Unbiased Survey). In the southern sky, we started to search for H alpha stars in nearby star forming regions in the southern sky.
|
